.ZzBulle {
  position: relative;
  cursor: help;
}
.ZzBulle > span {
  display: none;
}
.ZzBulle:hover > span {
  display: inline;
  position: absolute;
  white-space: nowrap;
  top: 1em;
  left: 0px;
  cursor: default;
  padding-top: 5px;
}
.ZzIconDescription {
  display: block;
  background-color: white;
  border: 1px solid silver;
}